CN109203621A - A kind of double-sided polyimide film with electromagnetic wave absorption functions - Google Patents
A kind of double-sided polyimide film with electromagnetic wave absorption functions Download PDFInfo
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- CN109203621A CN109203621A CN201810144303.9A CN201810144303A CN109203621A CN 109203621 A CN109203621 A CN 109203621A CN 201810144303 A CN201810144303 A CN 201810144303A CN 109203621 A CN109203621 A CN 109203621A
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- electromagnetic wave
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
- B32B27/281—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42 comprising polyimides
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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- B32B38/00—Ancillary operations in connection with laminating processes
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- B32B2255/00—Coating on the layer surface
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- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
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- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
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- B32B2307/00—Properties of the layers or laminate
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Abstract
The present invention provides a kind of double-sided polyimide film and preparation method thereof with electromagnetic wave absorption functions, and the film includes: two polyimide base material film layers；It is respectively coated in the filtering coating of two polyimide base material film layer opposite faces；Polyimide base material film layer is coated with the stacking of filtering coating one side, pressing connection.The thin offer resistivity of the double-sided polyimide with electromagnetic wave absorption functions is high, density is small, high tenacity, abrasion performance, high temperature resistant, the double-sided polyimide film that anticorrosion, filtering performance is good, dimensional stability is excellent.
Description
Technical field
The invention belongs to filtering material technical fields, and in particular, to a kind of two-sided poly- with electromagnetic wave absorption functions
Imide membrane.
Background technique
Polyimides (PI) film has the properties such as high intensity, high tenacity, abrasion performance, high temperature resistant, anticorrosion, can accord with
Light, thin, short, small design requirement is closed, is a kind of high-temperature insulation material with competitive advantage.By development in more than 40 years,
Have become one of the important source material of electronics, motor product, electronic field is widely used in soft board, semiconductor packages, photovoltaic (too
Positive energy) energy, liquid crystal display etc., and motor field is mainly used in space flight, military project, machinery, automobile etc..
Simultaneously in electronic field, with the development of digital technology, electronic product is constantly to light, thinning and miniaturization hair
Exhibition, the packing density of component is increasing, while running frequency is higher and higher.Under complicated electromagnetic environment, electronics member device
Emc issue is got worse between part.
Electromagnetic wave absorbent material, abbreviation filtering material are a kind of electromagnetic wave that can be projected onto its surface largely suctions
It receives, and is lost by the electric or magnetic of material and consumes the energy that electromagnetic energy is converted into thermal energy or other forms, and is anti-
Penetrate, scatter and transmit the composite functional material of all very littles.
There are mainly four types of the classification methods of filtering material: can be divided into absorption-type and interference-type by filtering principle, the former utilizes
Material itself interferes counteracting using surface layer and two column back wave of bottom to the absorption of electromagnetic wave, the latter to reduce electromagnetism spoke
It penetrates；It is divided into resistive, dielectric type and magnetic medium type by wear out mechanism, silicon carbide, graphite etc. belong to resistor-type, and electromagnetic energy is main
Decaying is dissipated on material resistance with form of thermal energy, and barium titanate is dielectric type filtering material, mainly by the electron pole of medium
The relaxation loss decaying electromagnetic wave absorption of change, molecular polarization or interfacial polarization, magnetic loss type absorbent is by magnetic hystersis loss, vortex
The Polarization Mechanisms decaying electromagnetic wave absorption such as loss and residual loss, such as ferrite, carbonyl iron；
It is divided into application type and structural type by moulding process, application type is that target is coated on after mixing absorbent with binder
Surface forms filtering coating, and structural type filtering material is usually that absorbent is dispersed in the structural material enhanced by special fibre
Formed in structural composite material, it have carrying and filtering dual function；By different study periods, filtering material can divide
To be traditional and novel, ferrite, metal fine powder, barium titanate, silicon carbide, graphite, conductive fiber etc. are traditional filtering material,
They have the characteristics that at low cost, absorption band is narrow, density is big, and main target is to absorb by force, nano material, polycrystalline iron fiber,
The novel filtering material such as graphene, conduction high polymer, it is desirable that meet thickness is thin, working band is wide, light-weight, adhesion strength is high etc.
Feature.
For filtering material, the current country is primarily present following patent document:
The Chinese patent of Publication No. CN105172298A disclose it is a kind of it is magnetic inhale wave film and preparation method thereof, magnetism is inhaled
Wave film includes carrier and the suction wave layer for being fixed on carrier surface, and the main material for inhaling wave layer includes resin system and filler；Resin
System includes fire resistant resin and curing agent；Fire resistant resin is selected from epoxy resin, cyanate ester resin and double maleic anhydride resins
One or more of.Magnetic wave film silk-screen high temperature resistant on PI film of inhaling that this patent provides filters ink, solves high temperature resistant
Problem, however since the filtering coating of its silk-screen does not have the protection of PI film, it cannot achieve high abrasion, high corrosion-resistant requirement；Silk-screen
Coating layer thickness is thicker, and disadvantage is used in lightening electronic equipment, and silk-screen high temperature resistant filters the thinner thickness of ink, and
There is no the protection of PI film, wearability, anticorrosive property, filtering performance has to be strengthened.
Summary of the invention
Above-mentioned to solve the problems, such as, the purpose of the present invention is to provide a kind of with the two-sided of electromagnetic wave absorption functions
Kapton, the thin offer resistivity of the double-sided polyimide with electromagnetic wave absorption functions is high, density is small, high-ductility
Property, abrasion performance, high temperature resistant, the double-sided polyimide film that anticorrosion, filtering performance is good, dimensional stability is excellent.
In order to achieve the above objectives, the technical scheme is that
A kind of double-sided polyimide film with electromagnetic wave absorption functions, the film include: two polyimide base materials
Film layer；It is respectively coated in the filtering coating of two polyimide base material film layer opposite faces；The coating of polyimide base material film layer
There are the stacking of filtering coating one side, pressing connection.
Further, the film thickness is 0.3mil, 0.5mil, 1mil, 2mil or 3mil.
Further, the filtering coating between two polyimide base material film layers is with a thickness of 0.3~3mil.
Further, each polyimide base material thin film layer thickness is 0.3~1mil.
Further, the filtering coating includes the ingredient of following parts by weight: absorbent: 80~85 parts, binder: 14~
18 parts, auxiliary agent: 0.5~1 part, organic solvent: 95~105 parts.
Further, the absorbent is graphene mixed nano-crystal alloy powder, and the nanometer crystal alloy micro mist is selected from
FeCuB nanometer crystal alloy micro mist, FeCuSiBCo nanometer crystal alloy micro mist, FeCuBNi nanometer crystal alloy micro mist or FeCuSiBCV
Nanometer crystal alloy micro mist.
Further, the binder is thermosetting resin, is selected from phenolic resin, Lauxite, melamine-formaldehyde
Resin, unsaturated-resin, polyurethane, polyimides, acrylic resin, furane resins, polybutadiene, has epoxy resin
The mixing of one or more of machine silicone resin.
Further, the auxiliary agent is one of defoaming agent, levelling agent, wetting agent, dispersing agent, coupling agent, antioxidant
Or a variety of mixing.
Further, the organic solvent be butanone, methylisobutylketone, ethyl acetate, butyl acetate, dimethylbenzene, butanol,
The mixing of one or more of propylene glycol monomethyl ether, dimethylformamide, dimethyl acetamide, halogenated alkane.
Meanwhile the preparation method of the present invention also provides a kind of double-sided polyimide film with electromagnetic wave absorption functions,
The preparation method includes the following steps:
1) the colloid A of 200~800mPa.s of viscosity is made into using organic solvent dissolution binder in a kettle；
2) colloid A, absorbent and auxiliary agent are added in de-airing mixer and are stirred 60~180 minutes, be made into filtering coating；
3) two polyimide base material films are taken, filtering coating are uniformly coated on respectively on coating apparatus polyimide-based
In material film one side, single layer polyimide base material film layer is obtained through oven drying；
4) by two be coated with filtering coating polyimide base material film layers, according to polyimide base material film on the outside,
Combination of the filtering coating in inside carries out high temperature lamination, and temperature is 130~160 DEG C, and pressure is 0.5~1.0MPa, through 130~
After 160 DEG C of hot settings, the double-sided polyimide film with electromagnetic wave absorption functions is obtained.
The beneficial effects of the present invention are:
It is two-sided to provide that a kind of resistivity is high, density is small, high tenacity, abrasion performance, high temperature resistant, anticorrosion, filtering performance are good
Kapton.Such PI film can be used as the critical materials of FPCB upstream materials FCCL, can be applied not only to flexible circuit
Plate is also used in the various fields such as space flight, IC passivating film and LCD alignment film.
Filtering coating is coated directly on PI film using Coating (coating) technique by the present invention, and coating thickness is according to wanting
Asking can arbitrarily regulate and control from 0.3~3mil.The subsequent PI film that two panels is coated with filtering coating is pressed by heat pressing process, is obtained
To target product.The comparison prior art has the following characteristics that
1) excellent broadband has the performance of electromagnetic wave absorption functions
2) it is good to cross Reflow Soldering performance for high temperature resistant
3) using with excellent adaptability and flexibility on FPCB
4) excellent corrosion resistance and wearability
5) sliding property and elasticity are all very excellent.
6) fabrication processing is simple and easy, can the roll-to-roll production of high-volume, it is high-efficient.
7) bilayer PI is protected, and provides excellent physical property.The raw material of internal layer filtering coating can be required according to concrete application
Filtering performance is adjusted, excellent broadband has the performance of electromagnetic wave absorption functions.
8) excellent corrosion resistance and wearability, PI itself have splendid wearability, anticorrosive property, as the design's
Cladding material, filtering coating are protected in internal layer, formula design in can emphasis consider enhancing filtering performance, increase filtering powder
Content, achieve the purpose that improve filtering characteristic.
9) this structure designs, and using having excellent adaptability and flexibility on FPCB, sliding property and elasticity are all very excellent
It is different, the advantages of giving full play to two kinds of materials, near FPCB or electronic component, the material of this structure can play insulation,
The effect of filtering plays a key effect to purification electromagnetic environment.
10) it is good to cross Reflow Soldering performance for high temperature resistant.
Detailed description of the invention
Fig. 1 is a kind of structural representation of the double-sided polyimide film with electromagnetic wave absorption functions provided by the present invention
Figure.
Specific embodiment
Referring to Fig.1, a kind of double-sided polyimide film with electromagnetic wave absorption functions of the present invention, the film
It include: two polyimide base material film layers 1；It is respectively coated in the filtering coating 2 of two polyimide base material film layers, 1 opposite face；
Polyimide base material film layer 1 is coated with filtering coating 2 and is laminated on one side, presses connection.
Further, the film thickness is 0.3mil, 0.5mil, 1mil, 2mil or 3mil.
Further, the filtering coating between two polyimide base material film layers is with a thickness of 0.3~3mil.
Further, each polyimide base material thin film layer thickness is 0.3~1mil.
Further, the filtering coating includes the ingredient of following parts by weight: absorbent: 80~85 parts, binder: 14~
18 parts, auxiliary agent: 0.5~1 part, organic solvent: 95~105 parts.
Further, the absorbent is graphene mixed nano-crystal alloy powder, and the nanometer crystal alloy micro mist is selected from
FeCuB nanometer crystal alloy micro mist, FeCuSiBCo nanometer crystal alloy micro mist, FeCuBNi nanometer crystal alloy micro mist or FeCuSiBCV
Nanometer crystal alloy micro mist.
Further, the binder is thermosetting resin, is selected from phenolic resin, Lauxite, melamine-formaldehyde
Resin, unsaturated-resin, polyurethane, polyimides, acrylic resin, furane resins, polybutadiene, has epoxy resin
The mixing of one or more of machine silicone resin.
Further, the auxiliary agent is one of defoaming agent, levelling agent, wetting agent, dispersing agent, coupling agent, antioxidant
Or a variety of mixing.
Further, the organic solvent be butanone, methylisobutylketone, ethyl acetate, butyl acetate, dimethylbenzene, butanol,
The mixing of one or more of propylene glycol monomethyl ether, dimethylformamide, dimethyl acetamide, halogenated alkane.
Meanwhile the preparation method of the present invention also provides a kind of double-sided polyimide film with electromagnetic wave absorption functions,
The preparation method includes the following steps:
1) the colloid A of 200~800mPa.s of viscosity is made into using organic solvent dissolution binder in a kettle；
2) colloid A, absorbent and auxiliary agent are added in de-airing mixer and are stirred 60~180 minutes, be made into filtering coating；
3) two polyimide base material films are taken, filtering coating are uniformly coated on respectively on coating apparatus polyimide-based
In material film one side, single layer polyimide base material film layer is obtained through oven drying；
4) by two be coated with filtering coating polyimide base material film layers, according to polyimide base material film on the outside,
Combination of the filtering coating in inside carries out high temperature lamination, and temperature is 130~160 DEG C, and pressure is 0.5~1.0MPa, through 130~
After 160 DEG C of hot settings, the double-sided polyimide film with electromagnetic wave absorption functions is obtained.
Wherein, the polyimide base material film layer is the PI film of 0.3~1mil, preferably 0.3, the PI of 0.5mil thickness
Film.
Absorbent is graphene mixed nano-crystal alloy powder, is novel high-efficiency absorbent, belongs to dielectric type and magnetic
Loss-type composite absorber decays by Polarization Mechanisms such as dielectric loss, magnetic hystersis loss, eddy-current loss and residual losses and absorbs electricity
Magnetic wave.Theoretically, excellent radio-radar absorber alloy powder answers magnetic loss with higher and significant two-dimensional structure, this
Sample can just absorb extraneous electromagnetic wave as far as possible.The alloy of heterogeneity is respectively provided with optimal electricity in different application bands
Electro-magnetic wave absorption performance.
Binder is thermosetting resin: phenolic resin, Lauxite, melamine formaldehyde resin, epoxy resin, insatiable hunger
With one of resin, polyurethane, polyimides, acrylic resin, furane resins, polybutadiene, organic siliconresin or
Several mixing, preferred acrylic resins；
Auxiliary agent is main are as follows: defoaming agent, levelling agent, wetting agent, dispersing agent, coupling agent, one or more kinds of in antioxidant；
Organic solvent is butanone, methylisobutylketone, ethyl acetate, butyl acetate, dimethylbenzene, butanol, propylene glycol monomethyl ether, two
The mixing of one or more of methylformamide, dimethyl acetamide, halogenated alkane, preferably butanone
Processing step:
Step 1: being made into viscosity 200~800mPa.s colloid using organic solvent dissolution binder resin in a kettle
A；
It stirs 60~180 minutes, does step 2: colloid A and absorbent and auxiliary agent are added in de-airing mixer simultaneously
At slurry B；
Step 3: slurry B is uniformly coated on substrate PI film on coating apparatus, obtaining single layer through oven drying has
The PI film C of electromagnetic wave absorption functions；
Step 4: on the outside according to PI film by two membranes C, combination of the filtering coating in inside carries out high temperature lamination, (temperature
It is preferred that 150 DEG C, the preferred 0.5MPa of pressure) thermosetting resin through high temperature post cure, obtains of the present invention having electromagnetic wave absorption
The double-sided polyimide film of function.
Embodiment 1
Select the PI film of 0.3mil thickness as polyimide base material film layer 1, preparation 2 slurry of filtering coating is coated on poly-
On acid imide base film layer 1, the parts by weight of the composition of filtering coating 2 and each component are as follows:
The sample 1 that overall thickness is 1mil is made according to above-mentioned steps, filtering coating 2 is with a thickness of 0.4mil
Comparative example 1 (comparative example 1 thickens processing, and overall thickness is 2 times of sample 1)
It selects the PI film of 0.5mil thickness as polyimide base material film layer 1, prepares filtering coating 2 and be coated on PI substrate
On, the parts by weight of the composition of filtering coating 2 and each component are as follows:
The sample 2 that overall thickness is 2mil is made according to above-mentioned steps, filtering coating is with a thickness of 1mil
Embodiment 2
It selects the PI film of 0.3mil thickness as polyimide base material film layer 1, prepares filtering coating 2 and be coated on PI substrate
On, the parts by weight of the composition of filtering coating 2 and each component are as follows:
The sample 3 that overall thickness is 1mil is made according to above-mentioned steps, filtering coating is with a thickness of 0.4mil
Comparative example 2:(comparative example 2 increases the content of filtering agent)
It selects the PI film of 0.3mil thickness as polyimide base material film layer 1, prepares filtering coating 2 and be coated on PI substrate
On, the parts by weight of the composition of filtering coating 2 and each component are as follows:
The sample 4 that overall thickness is 1mil is made according to above-mentioned steps, wherein filtering coating is with a thickness of 0.4mil.
Above 4 sample pipetting volume product 5 (the pure PI film of thickness 1mil) test (test as shown in the table of its transmission loss on year-on-year basis
Standard GB/T 26118.3-2010):
| Test item | Sample 1 | Sample 2 | Sample 3 | Sample 4 | Sample 5 |
| 100MHz | -2.064dB | -4.009dB | -4.665dB | -4.826dB | -0.194dB |
| 200MHz | -2.125dB | -4.154dB | -4.876dB | -5.167dB | -0.194dB |
| 300MHz | -2.153dB | -4.256dB | -4.912dB | -5.214dB | -0.195dB |
| 400MHz | -2.205dB | -4.321dB | -4.726dB | -4.875dB | -0.195dB |
| 500MHz | -2.674dB | -4.595dB | -4.521dB | -4.613dB | -0.195dB |
| 600MHz | -2.796dB | -4.766dB | -4.125dB | -4.217dB | -0.195dB |
| 700MHz | -2.891dB | -4.908dB | -3.657dB | -3.659dB | -0.195dB |
| 800MHz | -3.014dB | -5.213dB | -3.169dB | -3.216dB | -0.195dB |
| 900MHz | -3.218dB | -5.479dB | -2.674dB | -2.840dB | -0.195dB |
| 1000MHz | -3.517dB | -5.764dB | -2.105dB | -2.175dB | -0.196dB |
It should be noted that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although referring to compared with
Good embodiment describes the invention in detail, those skilled in the art should understand that, it can be to the technology of invention
Scheme is modified or replaced equivalently, and without departing from the range of technical solution of the present invention, should all be covered in power of the invention
In sharp claimed range.
Claims (10)
1. a kind of double-sided polyimide film with electromagnetic wave absorption functions, which is characterized in that the film includes:
Two polyimide base material film layers；
It is respectively coated in the filtering coating of two polyimide base material film layer opposite faces；
Polyimide base material film layer is coated with the stacking of filtering coating one side, pressing connection.
2. the double-sided polyimide film according to claim 1 with electromagnetic wave absorption functions, which is characterized in that described
Film thickness is 0.3mil, 0.5 mil, 1 mil, 2 mil or 3mil.
3. the double-sided polyimide film according to claim 1 with electromagnetic wave absorption functions, which is characterized in that be located at
Filtering coating between two polyimide base material film layers is with a thickness of 0.3 ~ 3mil.
4. the double-sided polyimide film according to claim 1 with electromagnetic wave absorption functions, which is characterized in that described
Each polyimide base material thin film layer thickness is 0.3 ~ 1mil.
5. the double-sided polyimide film according to claim 1 with electromagnetic wave absorption functions, which is characterized in that described
Filtering coating includes the ingredient of following parts by weight: absorbent: 80 ~ 85 parts, binder: and 14 ~ 18 parts, auxiliary agent: 0.5~1 part, organic
Solvent: 95~105 parts.
6. the double-sided polyimide film according to claim 5 with electromagnetic wave absorption functions, which is characterized in that described
Absorbent be graphene mixed nano-crystal alloy powder, the nanometer crystal alloy micro mist be selected from FeCuB nanometer crystal alloy micro mist,
FeCuSiBCo nanometer crystal alloy micro mist, FeCuBNi nanometer crystal alloy micro mist or FeCuSiBCV nanometer crystal alloy micro mist.
7. the double-sided polyimide film according to claim 5 with electromagnetic wave absorption functions, which is characterized in that described
Binder is thermosetting resin, selected from phenolic resin, Lauxite, melamine formaldehyde resin, epoxy resin, unsaturated tree
One or more of rouge, polyurethane, polyimides, acrylic resin, furane resins, polybutadiene, organic siliconresin
Mixing.
8. the double-sided polyimide film according to claim 5 with electromagnetic wave absorption functions, which is characterized in that described
Auxiliary agent is the mixing of one or more of defoaming agent, levelling agent, wetting agent, dispersing agent, coupling agent, antioxidant.
9. the double-sided polyimide film according to claim 5 with electromagnetic wave absorption functions, which is characterized in that described
Organic solvent is butanone, methylisobutylketone, ethyl acetate, butyl acetate, dimethylbenzene, butanol, propylene glycol monomethyl ether, dimethyl formyl
The mixing of one or more of amine, dimethyl acetamide, halogenated alkane.
10. a kind of double-sided polyimide film any one of claims 1 to 9 with electromagnetic wave absorption functions
Preparation method, which is characterized in that the preparation method includes the following steps:
1) the colloid A of 200~800mPa.s of viscosity is made into using organic solvent dissolution binder in a kettle；
2) colloid A, absorbent and auxiliary agent are added in de-airing mixer and are stirred 60~180 minutes, be made into filtering coating；
3) polyimide base material film is taken, filtering coating is uniformly coated on respectively on coating apparatus polyimide base material film
On on one side, single layer polyimide base material film layer is obtained through oven drying；
4) by two be coated with filtering coating polyimide base material film layers, according to polyimide base material film on the outside, filtering
Combination of the coating in inside carries out high temperature lamination, and temperature is 130~160 DEG C, and pressure is 0.5~1.0MPa, through 130~160 DEG C
After hot setting, the double-sided polyimide film with electromagnetic wave absorption functions is obtained.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157270A (en) * | 2019-06-03 | 2019-08-23 | 上海碳源汇谷新材料科技有限公司 | Aqueous plastic coating of a kind of graphene oxide enhancing and preparation method thereof |
| CN112318983A (en) * | 2020-10-21 | 2021-02-05 | 西安现代控制技术研究所 | Cobalt-based amorphous composite material convenient to form |
| CN114316331A (en) * | 2021-11-08 | 2022-04-12 | 江西有泽新材料科技有限公司 | Ultrathin polyimide film with improved dimensional stability and preparation method thereof |
| CN115071233A (en) * | 2021-03-11 | 2022-09-20 | 天津科技大学 | Packaging material and method for producing the same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201119250Y (en) * | 2007-11-01 | 2008-09-17 | 姚洪茂 | Anti-radiation card |
| CN202480495U (en) * | 2011-11-03 | 2012-10-10 | 3M材料技术（广州）有限公司 | Wave absorber |
| KR101321511B1 (en) * | 2013-05-21 | 2013-10-28 | (주)켐스 | Manufacturing method of electromagnetic wave absortion sheet integrated with coverlay and elctromagnetic wave absortion sheet thereby |
| CN103640289A (en) * | 2013-12-04 | 2014-03-19 | 东莞市纳利光学材料有限公司 | Anti-electromagnetic wave and scratch-resistant protective film and preparation method thereof |
| WO2015063681A1 (en) * | 2013-10-28 | 2015-05-07 | Uniwersytet Wroclawski | Coating for absorbing energy, especially the energy of electromagnetic and mechanical waves, and its use |
| CN105025694A (en) * | 2015-07-28 | 2015-11-04 | 苏州驭奇材料科技有限公司 | Electromagnetic wave absorbing material with protective layer and manufacturing method of electromagnetic wave absorbing material |
| CN105172267A (en) * | 2015-09-15 | 2015-12-23 | 中国人民解放军国防科学技术大学 | Polyimide-based sandwich-structure wave absorbing material and preparation method thereof |
-
2018
- 2018-02-12 CN CN201810144303.9A patent/CN109203621A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201119250Y (en) * | 2007-11-01 | 2008-09-17 | 姚洪茂 | Anti-radiation card |
| CN202480495U (en) * | 2011-11-03 | 2012-10-10 | 3M材料技术（广州）有限公司 | Wave absorber |
| KR101321511B1 (en) * | 2013-05-21 | 2013-10-28 | (주)켐스 | Manufacturing method of electromagnetic wave absortion sheet integrated with coverlay and elctromagnetic wave absortion sheet thereby |
| WO2015063681A1 (en) * | 2013-10-28 | 2015-05-07 | Uniwersytet Wroclawski | Coating for absorbing energy, especially the energy of electromagnetic and mechanical waves, and its use |
| CN103640289A (en) * | 2013-12-04 | 2014-03-19 | 东莞市纳利光学材料有限公司 | Anti-electromagnetic wave and scratch-resistant protective film and preparation method thereof |
| CN105025694A (en) * | 2015-07-28 | 2015-11-04 | 苏州驭奇材料科技有限公司 | Electromagnetic wave absorbing material with protective layer and manufacturing method of electromagnetic wave absorbing material |
| CN105172267A (en) * | 2015-09-15 | 2015-12-23 | 中国人民解放军国防科学技术大学 | Polyimide-based sandwich-structure wave absorbing material and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110157270A (en) * | 2019-06-03 | 2019-08-23 | 上海碳源汇谷新材料科技有限公司 | Aqueous plastic coating of a kind of graphene oxide enhancing and preparation method thereof |
| CN112318983A (en) * | 2020-10-21 | 2021-02-05 | 西安现代控制技术研究所 | Cobalt-based amorphous composite material convenient to form |
| CN115071233A (en) * | 2021-03-11 | 2022-09-20 | 天津科技大学 | Packaging material and method for producing the same |
| CN115071233B (en) * | 2021-03-11 | 2024-03-26 | 天津科技大学 | Packaging material and preparation method thereof |
| CN114316331A (en) * | 2021-11-08 | 2022-04-12 | 江西有泽新材料科技有限公司 | Ultrathin polyimide film with improved dimensional stability and preparation method thereof |
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